Spectrometry

Analyte

• Compact materials, films, solutions, dispersions, polymer layers on substrates

Equipment

• EquipmentSPEX (Jobin-Yvon) Fluorolog 122fluorescence spectral photometer LS50B (Perkin-Elmer)

• Wave length range: 200 – 800 nm (excitation), 200 – 900 nm (emission)
• the SPEX Fluorolog is able to record spectra from fluoresceine solutions with concentrations > 50 fmol/l

Analysis methods and response values

• Measuring of fluorescence spectra and measuring of fluorescence intensity depending on time ("time-drive")

Aim

• Determining position and intensity of fluorescence bands and their changes due to chemical and/or physical processes
• Investigations concerning the light-induced decomposition of substances
• Examination concerning the fluorescence behavior of additives (dyes) depending on the polymer matrix
• Measuring of fluorescence quenching in dependence on parameters like dye concentration, matrix material, production etc.
• charcterization of quantum dots
• labelling of functional groups for their determination